Model sharing doc: more tweaks (#8520)
Model sharing doc: more tweaks (#8520)

* More doc tweaks

* Update model_sharing.rst

* make style

* missing newline

* Add email tip

Co-authored-by: Pierric Cistac <f16ac4f52cc858a577733e52b7cd2285d378e004@huggingface.co>
huggingface/transformers,huggingface/transformers,huggingface/pytorch-transformers,huggingface/transformers,huggingface/transformers